Thermonuclear instability of global-type shear Alfven modes

James W. Van Dam; Guo Yong Fu; C. Z. Cheng

doi:10.13182/FST90-A29282

Thermonuclear instability of global-type shear Alfven modes

James W. Van Dam, Guo Yong Fu, C. Z. Cheng

Institute of Space and Plasma Sciences

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

The effects of thermonuclear alpha particles on the stability of global-type shear Alfven waves in toroidal geometry in an ignition tokamak experiment are described. The presence of finite toroidicity can lead to stabilization of the global shear Alfven eigenmode. However, toroidicity induces a new global shear Alfven eigenmode that can be strongly destabilized via transit resonance with alpha particles. In the proposed International Thermonuclear Experimental Reactor (ITER), due to its large size and low density, this latter mode is found to be benign.

Original language	English
Pages (from-to)	461-474
Number of pages	14
Journal	Fusion Technology
Volume	18
Issue number	3
DOIs	https://doi.org/10.13182/FST90-A29282
Publication status	Published - 1990

All Science Journal Classification (ASJC) codes

General Engineering

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title = "Thermonuclear instability of global-type shear Alfven modes",

abstract = "The effects of thermonuclear alpha particles on the stability of global-type shear Alfven waves in toroidal geometry in an ignition tokamak experiment are described. The presence of finite toroidicity can lead to stabilization of the global shear Alfven eigenmode. However, toroidicity induces a new global shear Alfven eigenmode that can be strongly destabilized via transit resonance with alpha particles. In the proposed International Thermonuclear Experimental Reactor (ITER), due to its large size and low density, this latter mode is found to be benign.",

author = "{Van Dam}, {James W.} and Fu, {Guo Yong} and Cheng, {C. Z.}",

year = "1990",

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journal = "Fusion Technology",

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AU - Van Dam, James W.

AU - Fu, Guo Yong

AU - Cheng, C. Z.

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N2 - The effects of thermonuclear alpha particles on the stability of global-type shear Alfven waves in toroidal geometry in an ignition tokamak experiment are described. The presence of finite toroidicity can lead to stabilization of the global shear Alfven eigenmode. However, toroidicity induces a new global shear Alfven eigenmode that can be strongly destabilized via transit resonance with alpha particles. In the proposed International Thermonuclear Experimental Reactor (ITER), due to its large size and low density, this latter mode is found to be benign.

AB - The effects of thermonuclear alpha particles on the stability of global-type shear Alfven waves in toroidal geometry in an ignition tokamak experiment are described. The presence of finite toroidicity can lead to stabilization of the global shear Alfven eigenmode. However, toroidicity induces a new global shear Alfven eigenmode that can be strongly destabilized via transit resonance with alpha particles. In the proposed International Thermonuclear Experimental Reactor (ITER), due to its large size and low density, this latter mode is found to be benign.

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JO - Fusion Technology

JF - Fusion Technology

IS - 3

ER -

Thermonuclear instability of global-type shear Alfven modes

Abstract

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